AN AUTOMATIC STEP SIZE CORRECTION SCHEME FOR NON-ASSOCIATED PLASTICITY PROBLEMS. NUMERICAL MODELS IN GEOMECHANICS. NUMOG III. PROCEEDINGS OF THE 3RD INTERNATIONAL SYMPOSIUM HELD AT NIAGARA FALLS, CANADA, 8-11 MAY 1989

An automatic step size correction scheme for use with elastoplastic finite element calculations is introduced and discussed in this paper. An accelerated initial stiffness method is used to solve the equilibrium equations. The properties of this method are analysed to obtain an estimated number of iterations up to convergence. Based on this estimate, step sizes in the incremental procedure are adapted during the iterative process. This automatic step size control proves to be robust and appropriate for non-associated plasticity problems. The problem of a rigid footing indentation in a purely frictional soil will be discussed to show the merits of the automatic step size correction procedure. For the covering abstract of this conference see IRRD 824029.

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• Corporate Authors:

  Elsevier Science Publishers

  Crown House, Linton Road
  Barking, Essex IG11 8JU,   England 
• Authors:
  • Van LANGEN, H
  • VERMEER, P A
• Publication Date: 1989

Language

• English

Media Info

• Pagination: p. 423-30
• Serial:
  • Publication of: Elsevier Applied Science Publishers Limited
  • Publisher: Elsevier Science Publishers

Subject/Index Terms

• TRT Terms: Automatic control; Automation; Conferences; Elasticity (Mechanics); Finite element method; Foundations; Mat foundations; Mathematical models; Plasticity; Stiffness; Values in measurement
• Uncontrolled Terms: Correction (Mathematics)
• Subject Areas: Data and Information Technology;

Filing Info

• Accession Number: 00497948
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• ISBN: 1-85166-425-4
• Files: ITRD, TRIS
• Created Date: Sep 30 1990 12:00AM